Fermionic Schwinger effect and induced current in de Sitter space
- Research Center for the Early Universe (RESCEU), Graduate School of Science,The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033 (Japan)
- Stanford Institute for Theoretical Physics and Department of Physics,Stanford University, Stanford, CA 94306 (United States)
We explore Schwinger effect of spin 1/2 charged particles with static electric field in 1+3 dimensional de Sitter spacetime. We analytically calculate the vacuum expectation value of the spinor current which is induced by the produced particles in the electric field. The renormalization is performed with the adiabatic subtraction scheme. We find that the current becomes negative, namely it flows in the direction opposite to the electric field, if the electric field is weaker than a certain threshold value depending on the fermion mass, which is also known to happen in the case of scalar charged particles in 1+3 de Sitter spacetime. Contrary to the scalar case, however, the IR hyperconductivity is absent in the spinor case.
- Sponsoring Organization:
- SCOAP3, CERN, Geneva (Switzerland)
- OSTI ID:
- 22572114
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 07; Other Information: PUBLISHER-ID: JCAP07(2016)010; OAI: oai:repo.scoap3.org:16334; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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